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| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2012-12-20 14:31:51 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-01-07 15:16:53 -0500 |
| commit | 70277f47b58b174a6b0b891dcd06ae5125afb73b (patch) | |
| tree | 7e03b3f60879982502e944366ebcb5db005c1f4b /drivers/net/wireless/iwlegacy/common.c | |
| parent | 93476b1e685036e8513be8df34ca442096af6b4c (diff) | |
| download | linux-70277f47b58b174a6b0b891dcd06ae5125afb73b.tar.gz linux-70277f47b58b174a6b0b891dcd06ae5125afb73b.tar.bz2 linux-70277f47b58b174a6b0b891dcd06ae5125afb73b.zip | |
iwlegacy: add flush callback
Dump implementation of flush, which just wait until all TX queues
become empty.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlegacy/common.c')
| -rw-r--r-- | drivers/net/wireless/iwlegacy/common.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlegacy/common.c b/drivers/net/wireless/iwlegacy/common.c index 7e16d10a7f14..56b80219d695 100644 --- a/drivers/net/wireless/iwlegacy/common.c +++ b/drivers/net/wireless/iwlegacy/common.c @@ -4707,6 +4707,42 @@ out: } EXPORT_SYMBOL(il_mac_change_interface); +void +il_mac_flush(struct ieee80211_hw *hw, bool drop) +{ + struct il_priv *il = hw->priv; + unsigned long timeout = jiffies + msecs_to_jiffies(500); + int i; + + mutex_lock(&il->mutex); + D_MAC80211("enter\n"); + + if (il->txq == NULL) + goto out; + + for (i = 0; i < il->hw_params.max_txq_num; i++) { + struct il_queue *q; + + if (i == il->cmd_queue) + continue; + + q = &il->txq[i].q; + if (q->read_ptr == q->write_ptr) + continue; + + if (time_after(jiffies, timeout)) { + IL_ERR("Failed to flush queue %d\n", q->id); + break; + } + + msleep(20); + } +out: + D_MAC80211("leave\n"); + mutex_unlock(&il->mutex); +} +EXPORT_SYMBOL(il_mac_flush); + /* * On every watchdog tick we check (latest) time stamp. If it does not * change during timeout period and queue is not empty we reset firmware. |